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. 2017 Feb 23;8:47. doi: 10.3389/fneur.2017.00047

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Copyright © 2017 Pircher, Montali, Berberat, Remonda and Killer.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Optic canal cross-sectional area (OCA) in normal-tension glaucoma (NTG) patients and controls. Box plot of optic canal cross-sectional area (OCA) measurements in NTG patients and controls, separated for right and left OCA. NTG patients (n = 56; right OCA: n = 47, left OCA: n = 52) and controls (n = 56, right OCA: n = 47, left OCA: n = 52).